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TOPIC: Rosetta mission
Blobrana


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First view of Earth as Rosetta approaches home
First view as Rosetta approaches home
Credits: ESA ©2009 MPS for OSIRIS Team MPS/UPD/LAM/IAA/RSSD/INTA/UPM/DASP/IDA
Image of the Earth acquired with the OSIRIS narrow-angle camera from a distance of 633 000 km on 12 November 2009 at 13:28 CET.
The resolution is 12 km/pixel. The image is a part of a sequence of images taken every hour through one full rotation (24 hours). The movie will be published later. || Three images with an orange, green, and blue filter were combined to create this one. The illuminated crescent is centered roughly around the South Pole (South at the bottom of the image). The outline of Antarctica is visible under the clouds that form the striking south-polar vortex. Pack ice in front of the coastline with its strong spectacular reflection is the cause for the very bright spots on the image.

The image is a part of a sequence of images taken every hour through one full rotation (24 hours).

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Blobrana


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When Europe's comet chaser Rosetta swings by Earth tomorrow for a critical gravity assist, tracking data will be collected to precisely measure the satellite's change in orbital energy. The results could help unravel a cosmic mystery that has stumped scientists for two decades.
Since 1990, scientists and mission controllers at ESA and NASA have noticed that their spacecraft sometimes experience a strange variation in the amount of orbital energy they exchange with Earth during planetary swingbys. The unexplained variation is noticed as a tiny difference in speed gained or lost during the swingby when comparing that predicted by fundamental physics and that actually measured after the event. 

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Time Event
22 October
14:30 - 21:30 TCM slot
5 November
12:30 - 19:30 Slot for TCM if needed
6 November
Beginning 22:45 Instruments switched on to begin observations of the Earth-Moon system
12 November
10:30 - 17:30 Slot for TCM if needed
13 November
01:00 - 08:00 Slot for TCM if needed
08:45 Earth closest approach
09:04 - 10:55 Swing by confirmation via Maspalomas ground station, Canary Islands
11:00 - 21:00 Start science data download via NASA DSN Goldstone, California
16:41 Moon closest approach
21:13 - 5:04 (14 November) ESTRACK DSA New Norcia ground station pass, Australia
19 November
By 12:05 Instruments turned off


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Rosetta's first glimpse of the Moon from 4.3 million km
On 8 November, Rosetta's OSIRIS instrument imaged the Moon from 4.3 million km as the satellite sped towards Earth for her final gravity-assist swingby, scheduled for 13 November 2009.

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After the trajectory correction manoeuvre on 22 October, Rosetta has lined up on a near-perfect Earth approach path. The manoeuvre was so precise that mission controllers decided not to use the additional manoeuvre slot that was available yesterday.

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Blobrana


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Rosetta space probe
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ESAs comet chaser Rosetta will swing by Earth for the last time on 13 November to pick up energy and begin the final leg of its 10-year journey to comet 67P/Churyumov-Gerasimenko. ESAs European Space Operations Centre will host a media briefing on that day.

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Blobrana


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Rosetta nicely lined up for Earth approach

The first (and most important) trajectory correction manoeuvre (TCM) executed last Thursday was extremely accurate, and Rosetta is nicely lined up for the approach to Earth. After a preliminary analysis, Trevor Morley, lead Rosetta flight dynamics specialist here at ESOC, has told us that closest approach to Earth is now expected at 07:45:40.1 UTC (08:45:40.1 CET) on 13 November.
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Last visit home for ESAs comet chaser
ESA's Rosetta comet chaser will swing by Earth on 13 November to pick up orbital energy and begin the final leg of its 10-year journey to the outer Solar System. Several observations of the EarthMoon system are planned before the spacecraft heads out to study comet 67/P Churyumov-Gerasimenko.
This will be the third Earth swingby, the last of Rosettas four planetary gravity assists. Closest approach to Earth is expected at 08:45 CET. The swingby will provide exactly the boost Rosetta needs to continue into the outer Solar System. The craft is scheduled for a close encounter with asteroid 21 Lutetia in July next year. 

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Flash movie

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Download Flash Video

Download Flash video

Credit ESA

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